The sounds produced by the exhaust is relatively quiet on highway speeds while from a stop it growls with a deep tone but not to loud that it creates rasp. I would recommend changing the catalytic converters for the ARK test pipes. There is some rattling sometimes from the pipes touching the frame under the car but I heard that you need to tighten the mid pipe while holding it up to the catalytic converters to prevent that rattling. Overall, from having a Tomei, I would recommend the ARK GRiP.